Microchip SY58021U Handleiding

Bekijk gratis de handleiding van Microchip SY58021U (13 pagina’s), behorend tot de categorie Niet gecategoriseerd. Deze gids werd als nuttig beoordeeld door 31 mensen en kreeg gemiddeld 4.4 sterren uit 7 reviews. Heb je een vraag over Microchip SY58021U of wil je andere gebruikers van dit product iets vragen? Stel een vraag

SY58021U

4GHz, 1:4 LVPECL Fanout

Buffer/Translator with Internal Termination

Precision Edge®

Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (

408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com

General Description

The SY58021U is a 2.5V/3.3V precision, high-speed, fully

differential 1:4 LVPECL fanout buffer. Optimized to provide

four identical output copies with less than 15ps output

skew and only 70 fsRMS phase jitter, the SY58021U can

process clock signals as fast as 4GHz.

The differential input includes Micrel’s unique, 3-pin input

termination architecture interfaces to differential LVPECL,

CML, and LVDS signals (AC- or DC-coupled) as small as

100mV without any level-shifting or termination resistor

networks in the signal path. For AC-coupled input interface

applications, an on-board output reference voltage (VREFAC)

is provided to bias the VT pin. The outputs are 100k

LVPECL compatible, with extremely fast rise/fall times

guaranteed to 70fs.

The SY58021U operates from a 2.5V ±5% supply or 3.3V

±10% supply and is guaranteed over the full industrial

temperature range (–40°C to +85°C). For applications that

require faster rise/fall times, or greater bandwidth, consider

the SY58022U 1:4 fanout buffer with 400mV LVPECL

output swing, or the SY58020U 1:4 CML fanout buffer. The

SY58021U is part of Micrel’s high-speed, Precision Edge®

product line.

Data sheets and support documentation can be found on

Micrel’s web site at www.micrel.com.

Precision Edge®

Features

•Precision 1:4 LVPECL fanout buffer

•Low jitter performance:

−70fsRMS phase jitter (typical)

•Accepts an input signal as low as 100mV

•Unique input termination and VT pin accepts DC-

coupled and AC-coupled differential inputs: LVPECL,

LVDS, and CML

•100k LVPECL-compatible 800mV swing output

•Power supply 2.5V ± ±5% and 3.3V 10%

• −°+°40C to 85C temperature range

• ×Available in 16-pin (3mm 3mm) QFN package

Applications

•All SONET and GigE clock distribution

•Fibre Channel clock and data distribution

•Backplane distribution

•High-end, low-skew, multiprocessor, synchronous clock

distribution

Block Diagram

September 2011M9999-090111-B

[email protected] or (408) 955-1690

Precision Edge is a registered trademark of Micrel, Inc.

Product specificaties